Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	In-situ growth and immobilization of CdS nanoparticles onto functionalized MoS2: Preparation, characterization and fabrication of photoelectrochemical cells
Δημιουργός/Συγγραφέας:	Kagkoura, Antonia Hernandez-Ferrer, Javier Benito, Ana M Maser, Wolfgang K [EL] Ταγματάρχης, Νίκος[EN] Tagmatarchis, Nikos
Εκδότης:	Wiley
Ημερομηνία:	2020-08-03
Γλώσσα:	Αγγλικά
ISSN:	1861-4728 1861-471X
DOI:	10.1002/asia.201901371
Άλλο:	31769929
Περίληψη:	A facile strategy for the controllable growth of CdS nanoparticles at the periphery of MoS2 en route the preparation of electron donor-acceptor nanoensembles is developed. Precisely, the carboxylic group of α-lipoic acid, as addend of the modified MoS2 obtained upon 1,2-dithiolane functionalization, was employed as anchor site for the in situ preparation and immobilization of the CdS nanoparticles in an one-pot two-step process. The newly prepared MoS2 /CdS hybrid material was characterized by complementary spectroscopic, thermal and microscopy imaging means. Absorption spectroscopy was employed to register the formation of MoS2 /CdS, by observing a broad shoulder centered at 420 nm due to CdS nanoparticles, while the excitonic bands of MoS2 were also evident. Moreover, based on the efficient quenching of the characteristic fluorescence emission of CdS at 725 nm by the presence of MoS2 , strong electronic interactions at the excited state between the two species within the ensemble were identified. Photoelectrochemical assays of MoS2 /CdS thin-film electrodes revealed a prompt, steady and reproducible anodic photoresponse during repeated on-off cycles of illumination. A significant zero-current photopotential of -540 mV and an anodic photocurrent of 1 μA were observed, underlining improved charge-separation and electron transport from CdS to MoS2 . The superior performance of the charge-transfer processes in MoS2 /CdS is of direct interest for the fabrication of photoelectrochemical and optoelectronic devices.
Τίτλος πηγής δημοσίευσης:	Chemistry, an Asian journal Special Issue: The Chemistry of 2D Materials Membranes
Τόμος/Κεφάλαιο:	15
Τεύχος:	15
Σελίδες:	2350-2356
Θεματική Κατηγορία:	[EL] Χημεία (Γενικά)[EN] Chemistry (General)
Λέξεις-Κλειδιά:	Electron transfer Hybrids Nanoparticles Photoelectrochemical cells Transition metal dichalcogenides Cadmium Compounds Disulfides Electrochemical Techniques Electrodes Light Molybdenum Sulfides Tin Compounds
Κάτοχος πνευματικών δικαιωμάτων:	© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://onlinelibrary.wiley.com/doi/abs/10.1002/asia.201901371
Ηλεκτρονική διεύθυνση περιοδικού (link) :	https://onlinelibrary.wiley.com/journal/1861471x
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο